Injector.



PATENTED SEPT. 15

C. LINSTROM.

' INJEGTOR.

APPLIOATION FILED APn.14. 1902.

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UNITED rares :Patented September V15, 19153.

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SPECIFICATION 'forming part of' Letters Patent No. 738,822,1:1ated september 15, 1903. Application filed April 14,1902. Serial No. 102,770.- (No model.)

Toa/M whom it may concern:

Be it known that I, CHARLES LINsTRoM, a citizen of the United States, residing at Vicksburg, in the county of Warren and State of Mississippi, have invented certain new and useful Improvements in Injectors, of which the following is a specification,

My invention relates particularly to that class of injectors which is used in connection with steam-boilers and called non-lifting7 injectors, and particularly to the means by which such injectors may be converted from non-lifting to lifting injectors, all of which will more fully hereinafter appear.

The principal object of this invention is to provide a simple, economical, and eiiicient non-lifting injector with means by which it may be converted into a lifting-injector.

A further object of the invention is to provide a non-lifting injector with compound valve mechanism for operating the injector as either a lifting or non-lifting injector.

Further objects of the invention will appear from an examination of the drawing and the following description and claims,

The invention consists principally in an injector in Which there is a main casing providing a waterchamber connected with a source of water-supply at the lower end and a steam-injecting nozzle at the upper end, a second casing axially arranged therein providing an injector-chamber open at the top in line with a steam-injecting nozzle and provided at the bottom with an outlet arranged to be connected with the Water-space of a boiler, and an`overiioW-passage connected with the injector-chamber intermediate the injecting-nozzle and boiler Water connection, and a second or priming steam -nozzle arranged in line with the overflow-outlet.

The invention consists, further and finally, in the features, combinations, and details of construction hereinafter described and claimed.

In the accompanying drawing the figure represents a vertical sectional elevation of an injector constructed in accordance with these improvements.

In constructing an injector according to these improvements I provide a main casing a, which is tubular in cross-section and preferably made of brass-metal casting. This casing has a main water-chamber b, connected at the bottom at Jthe inlet c with a source of water-supply. The upper end of this casing is provided with an injecting steam-nozzle d, preferably screw-threaded therein. Arranged immediately above the same and kept in close contact therewith by means of the stufng-boxing e is the outlet-pipe of a throttlc-valve f. This throttle-valve is-connected at its inlet end g with a source of steam-supply, preferably the steam-space of a boiler.

To provide for heating ot' the water at the same time of the injection thereof into the boiler and as the water is being lifted, I provide a second integral axially-arranged casing 71 forming an injector-chamber@ the upper end of which is open and provided with a double nozzle j, arranged underneath and in line with the steam-nozzle of the throttle-Y valve. The lower end of this injectionchamber is provided with an outlet-opening 7c, arranged to be connected with the waterspace of the boiler, so that as the water is lifted and heated it may be passed down through the injector-chamber and forced out through the water-outlet andinto the space of the boiler.

Up to this point I have described my improvements as they may be constructed for use as a non-lifting injector. To convert it into av lifting-injector, I provide an overiiow passage or outlet Qc, arranged in a casing Z, which overflow is connected with the injector chamber intermediate its inlet and outlet. This overflow-passage is provided with an overflow nozzle m at the bottom thereof. A priming-valve n is provided and connected with a second steam -nozzle p, which in turn is arranged inline with the overflow-nozzle. This priming-valve has an outlet pipe q, connected with the steamspace of the boiler, so that when such priming-valve is opened it forces the steam out of the overflow-nozzle, creating a vacuum in the Water-chamber of the injector, causing water 4to flood the same, Which,overilowing and passing down into the injector chamber, iiows out through the overflow-nozzle. As

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of the overflow-valve mechanism is provided with a threaded cap or bonnet r, in which is arranged a supplementary or screw valve s, and the valve-portion t of which is arranged to close the overflow-passage where it connects with the injector-chamber.

I claim'- l. In an injector of the class described, the

combination of a casing provided with a water-space connected with a `source of watersupply, a second casing arranged therein providing an injector-chamber open at its upper end and adapted to be connected with the Water-space of a boiler, a steam-nozzle arranged in alinement with the open end of the injector-chamber, an overliow pipe or passage connected with the injector chamber and provided with an outlet, a second steamnozzle-arranged in alinement with the outlet of the overliow-passage, and a valve arranged intermediate the injector-chamber and the nozzle of the overflow-passage, substantially as described.

2. In an injector of the class described, the combination of a casing provided with a Water space or chamber adapted to be connected at ils lower inlet end With a source of Watersupply and at its upper end with a source of steam-supply, an injecting-nozzle arranged at its upper end, an injector-chamber arranged inside of and surrounded by the waterchamber open at its upper end and in alinement with the steam-nozzle and at its lower end arranged to be connected with the Waterspace of the boiler, an overdow pipe or passage provided With a nozzle, a steam-pipe communicating with such nozzle and adapted to be connected with the steam-space of a boiler and` a primary valve in such steampipe, substantially as described.

3. In an injector of the class described, the combination of a main casing provided with a water-chamber connected atits lower inlet end with a source of water-supply and at its upper end with a source of steam-supply, a steam-nozzle arranged in the upper end, a second casing arranged inside the main casing providing an injector-chamber open at its upper end in alinement with the steamnozzle and provided with an outlet at or near its lower end arranged to be connected with the water-space of a boiler, an overflow pipe or passage connected with the injector intermediate the inlet andoutlet, a second steamnozzle arranged in alinement with the outlet of the overflow-pipe, and a supplementary valve arranged between the injector and the nozzle of the overliow-pipe outletto close l and open the overflow-passage, substantially as described.

4. In an injector of the class described, the combination of a casing provided with an injector-chamber having an overiiow-passage provided with an outlet, a nozzle arranged at the inlet end of the injector-chamber, a nozzle arranged intermediate the inlet and outlet ends of the overflow-passage, and a valve arranged between the overflow-passage and the injector chamber, substantially as described.

5. In an injector of the class described, the combination of a casing provided with an injector-chamber having an overiiow-passage provided with an outlet, a nozzle arranged at the inlet end of the injector-chamber, a steampipe provided with a passage communicating with the overflow-passage and-adapted to communicate with the steam-space of a boiler, and a valve arranged in such steam-pipe, substantially as described.

6. In an injector of the class described, the combination of a casing provided with a water-chamber an inner casing arranged therein provided with an injector-chamber having an overflow-passage provided with an outlet,

a steam-nozzle at the inlet end of such in-A jector-chamber communicating therewith, a steam-nozzle arranged intermediate the inlet end and outlet of the overflow-passage, a valve arranged intermediate the steam-nozzle of the overflow-passage and the injectorchamber, a pipe provided with a steam-pase sage communicating with the overflow-nozzle and adapted to communicate with the steamspace of a boiler, and a valve arranged in such steam-pipe, substantially as described.

7. In an injector of the class described, the combination of a casing provided with a water-chamber, an inner casing arranged within such Water-chamber provided with an injector-chamber having a main inlet-opening at the upper end thereof a main outlet-opening and an overflow-passage provided with an outlet, a steam-nozzle arranged at the inlet-opening of such injector-chamber, a plurality of supplementary nozzles arranged in the injector-chamber in alinement with such steam-nozzle, a steam-nozzle arranged intermediate the injector-chamber and the outlet end ofthe overiiow-passage, and a valve arranged intermediate the overflow-nozzle and the injector-chamber, substantially as de scribed.

8. In an injector of the class described, the combination of a casing havinga water-chamber therein, an inner casing arranged within such water-chamber having a main inlet a main outlet-opening and an overflow-passage provided with an outlet, a steam-nozzle arranged at the inlet end of the injector-chamber, a steam-nozzle arranged intermediate IOO IIO

the injector-chamber and the outlet of the jeetor-chamberand theoveroW-passage,sub oVeroW-passage and communicating with stantially as described. such passage, a pipe provided with a steampassage communicating with such nozzle and CHARLES LINSTRDM' 5 adapted to communicate with the steam- Witnesses:

space of a boiler, a valve arranged in such WM. MCLEAN,

pipe, and a valve arranged between the in- MICHAEL J. DONOVAN. 

